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Advanced Keyboard/TRIGONOMETRY USING THE SHARP EL-9900
Copyright © 2002, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.
Steps for graphing the sine function
1. Turn the calculator on and press Y= .
2. Press CL to remove an old Y1 expression.
3. Press ▼ CL to clear additional expressions.
4. To set up the calculator press 2ndF SET UP B (DRG) 2 (Rad)
E (COORD) 1 (Rect) G (EDITOR) and 1 (Equation).
5. Press 2ndF QUIT again to return to the Y prompts.
6. Enter the sine function ( y = sin x ) for Y1, by pressing sin X/θ/T/n .
7. Enter the viewing window range by pressing ZOOM E (TRIG) and
1 (sin x).
Steps for graphing the cosecant function.
1. Press Y= CL to remove an old Y1 expression.
2. Enter the cosecant function for Y1 by pressing MATH A (CALC)
1 0 (csc) and press X/θ/T/n .
3. Continue to use the sine function's built-in viewing range.
4. Press GRAPH to view the graph.
GRAPHS OF TRIGONOMETRIC FUNCTIONS
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